Home / 6,118.30-8,428.14-5,219.11

Finding the Fourth Proportional to 6,118.30, 8,428.14 and 5,219.11

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Solution

The fourth proportional to 6,118.30, 8,428.14 and 5,219.11 is: 7,189.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.30 : 8,428.14 = 5,219.11 : x
  2. Step 2: Convert to fraction form
    6,118.30/8,428.14 = 5,219.11/x
  3. Step 3: Cross multiply
    6,118.30x = 8,428.14 × 5,219.11
  4. Step 4: Simplify right side
    6,118.30x = 43,987,389.76
  5. Step 5: Solve for x
    x = 43,987,389.76/6,118.30
  6. Step 6: Final answer
    x = 7,189.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.